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Thyroxine Binding Globulin Blood Test

Michigan rates for HCPCS 84442

A blood test that measures the level of thyroxine binding globulin, a protein made by the liver that carries thyroid hormone through the bloodstream. It helps doctors interpret thyroid hormone levels correctly, since changes in this carrier protein — from pregnancy, liver disease, certain medications, or inherited conditions — can make total thyroid hormone results look abnormal even when thyroid function itself is normal. A small blood sample is all that's needed.

Rates data updated July 2026.

How much does Thyroxine Binding Globulin Blood Test cost?

$14.13

Typical negotiated rate. In Michigan, July 2026.

Insurers have agreed to pay about $14.13 for this service. The price depends on where it is billed: about $14.13 from a physician practice, and about $14.13 from a hospital or other facility. The two figures are alternatives, not parts of one bill.

These are rates insurers have negotiated with providers, not the amount a patient is billed. What you owe depends on your plan's deductible and coinsurance. Based on rates published by 6 insurance carriers under federal price transparency rules.

Where it's billed changes the price

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$14.13$12.02 to $14.13
FacilityA hospital or hospital-owned outpatient department$14.13$14.13 to $21.38

How much rates vary

Facilitymedian $14 · 10th to 90th $13 to $26Professionalmedian $14 · 10th to 90th $11 to $21
$5$10$20$50facility $14professional $14

Distribution of negotiated rates across all payers (price axis is log-scale). Each curve is scaled to its own total: facility and professional rates are different services, shown together to compare where they cluster. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$13.49
Median
$14.13
Typical High
$25.70
Aetna
Setting
Professional
Modifier
Global
Typical Low
$12.88
Median
$14.13
Typical High
$17.38
BCBS
Setting
Facility
Modifier
Global
Typical Low
$10.96
Median
$16.98
Typical High
$29.51
BCBS
Setting
Professional
Modifier
Global
Typical Low
$10.47
Median
$10.96
Typical High
$10.96
Cigna
Setting
Professional
Modifier
Global
Typical Low
$10.47
Median
$16.60
Typical High
$21.38
Health Alliance Plan
Setting
Facility
Modifier
Global
Typical Low
$14.13
Median
$14.79
Typical High
$48.98
Health Alliance Plan
Setting
Professional
Modifier
Global
Typical Low
$12.02
Median
$18.62
Typical High
$27.54
Priority Health
Setting
Professional
Modifier
Global
Typical Low
$14.79
Median
$16.98
Typical High
$20.89
United
Setting
Facility
Modifier
Global
Typical Low
$8.91
Median
$14.79
Typical High
$17.78
United
Setting
Professional
Modifier
Global
Typical Low
$6.17
Median
$12.30
Typical High
$19.05

Where Michigan sits

The same service costs 2.6 times more in Nebraska than in Washington, DC. Every bar is a state, most expensive first. Touch or drag across it to read any state, then open that state for its carriers and full range.

Michigan· 36th of 51

$14.13

NE $28.18DC $10.96

Median negotiated rate in each state, from every insurer that publishes one. States where no insurer publishes a rate for this service are not shown.